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#1
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Hi Amp breaker alternatives?
I have been using the Blue Seas Panel mount hi amp breakers for anchor
windlass and on the cabling between my battery banks. Total of 4. I'm very happy with all of the Blue Sea Sytems products. I also use their Hi Amp inline fuses and holders. BTW. They seem to stay on top of their quality control. I just recieved a recall notice on their T-1 circuit breakers (not the style I have). -- My opinion and experience. FWIW Steve s/v Good Intentions |
#2
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Hi Amp breaker alternatives?
Glenn,
Boat US has been selling Blue Seas Breakers at a considerable discount ~$25, or you might fuse and add an on/off. Why so high an amperage? We use Harkens electric winches also but I don't think our breakers are more than 50-75 amp. Bryan "Glenn Ashmore" wrote in message ... I did too. Only mine are all T-1s and all are installed already. :-( Hopefully replacing them will not be much of a hassle. I hate wrassling with anything bigger than #2. Steve wrote: I have been using the Blue Seas Panel mount hi amp breakers for anchor windlass and on the cabling between my battery banks. Total of 4. I'm very happy with all of the Blue Sea Sytems products. I also use their Hi Amp inline fuses and holders. BTW. They seem to stay on top of their quality control. I just recieved a recall notice on their T-1 circuit breakers (not the style I have). -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
#3
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Hi Amp breaker alternatives?
According to the catalog a B44 needs 100 amps. OTOH, the wattage is
rated at 600 which would indicate a somewhat lower amperage draw. It may be to handle the starting surge but breakers like this are designed to take 3 or 4 times the trip load for a second or two. Bryan B wrote: Glenn, Boat US has been selling Blue Seas Breakers at a considerable discount ~$25, or you might fuse and add an on/off. Why so high an amperage? We use Harkens electric winches also but I don't think our breakers are more than 50-75 amp. Bryan "Glenn Ashmore" wrote in message ... I did too. Only mine are all T-1s and all are installed already. :-( Hopefully replacing them will not be much of a hassle. I hate wrassling with anything bigger than #2. Steve wrote: I have been using the Blue Seas Panel mount hi amp breakers for anchor windlass and on the cabling between my battery banks. Total of 4. I'm very happy with all of the Blue Sea Sytems products. I also use their Hi Amp inline fuses and holders. BTW. They seem to stay on top of their quality control. I just recieved a recall notice on their T-1 circuit breakers (not the style I have). -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
#4
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Hi Amp breaker alternatives?
12 volt? That might be why I thought it seemed high.
"Glenn Ashmore" wrote in message ... According to the catalog a B44 needs 100 amps. OTOH, the wattage is rated at 600 which would indicate a somewhat lower amperage draw. It may be to handle the starting surge but breakers like this are designed to take 3 or 4 times the trip load for a second or two. Bryan B wrote: Glenn, Boat US has been selling Blue Seas Breakers at a considerable discount ~$25, or you might fuse and add an on/off. Why so high an amperage? We use Harkens electric winches also but I don't think our breakers are more than 50-75 amp. Bryan "Glenn Ashmore" wrote in message ... I did too. Only mine are all T-1s and all are installed already. :-( Hopefully replacing them will not be much of a hassle. I hate wrassling with anything bigger than #2. Steve wrote: I have been using the Blue Seas Panel mount hi amp breakers for anchor windlass and on the cabling between my battery banks. Total of 4. I'm very happy with all of the Blue Sea Sytems products. I also use their Hi Amp inline fuses and holders. BTW. They seem to stay on top of their quality control. I just recieved a recall notice on their T-1 circuit breakers (not the style I have). -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
#5
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Hi Amp breaker alternatives?
Glenn Ashmore wrote in message ...
I thought I had all my high amp wiring done but there was this brand new Harken 44 electric winch on eBay that just snuck up and picked my pocket. Now I need to run more 1/0 and add another breaker. I was looking for a spot to mount a Blue sea 100A surface mount when one of my son's friends showed me a 100 amp breaker he was about to put on his humongous car sterio. This thing looks exactly like the Blue Sea except it has gold plated terminals rather than nickel. It is intended to mount under the hood next to the battery so it is fully sealed. It also sells for $11.00 as opposed to $45 for the Blue Sea. Is this an example of the "marine markup" syndrome or is there something special about "marine" breakers? Sounds too good to be true but not impossible either. I think Blue Sea make a good product. Prior to them, the 100A breakers were all around $100+. Have a product name for this car stereo breaker? Evan Gatehouse |
#6
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Hi Amp breaker alternatives?
Evan Gatehouse wrote: Sounds too good to be true but not impossible either. I think Blue Sea make a good product. Prior to them, the 100A breakers were all around $100+. Have a product name for this car stereo breaker? Evan Gatehouse It is labeled "Fusion" but I think it is a generic Chinese unit. They are sold at most of the high end car sterio places under different names but the case is very similar to the Blue Sea except that it has a test trip button. I played around with it and one of the Blue Seas that I took out for the recall this afternoon. Wired them to a pair of L16s and some heater elements and measured the current with my old trusty Crompton Tong-Test. They both blew on about 105 amps after 1 minute for the Fusion and 2 for the Blue Sea. Can't say how it does with an inductive load surge as I don't want to risk burning up a brand new windlass motor. :-) -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
#7
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Hi Amp breaker alternatives? (long)
Sounds like what he was describing is a slow-blow circuit breaker. There are basically 3 things to keep in mind on breakers. One is how much inrush current they can withstand (a high, but short duration, peak). The other is the rating (that's what is printed on breaker, e.g. 150A). Another is the duration of excess current, e.g. slow blow, normal, fast blow. The duration spec is usually listed as a 'profile'. "G" is normal, "H" is slow blow, etcetera. Motors often use high-inrush slow blow breakers, but often use high-inrush and normal blow breakers. That's fine, if the motor maker recommends it. Remember, a circuit breaker is not designed to prevent excess current ...it's designed to prevent fire. Motors can take excess current to a point, then the windings catch on fire. Always go with the mfg recommendation and double check the factors I listed with them. Next, assuming your motor is able to take 250A and you use a 150A slow blow breaker, note that you'll cause a wiring fire if you don't size your wiring for 250A instead of the 150A. When you buy your 150A breaker, you need to double check the breaker specs to make sure it is OK to put the large gauge wire in it. The contacts and mechanical clamping must be designed for the higher gauge wire. On high current wiring, ALWAYS use saddle-clamp type breakers (and terminal blocks in the rest of the wiring). Saddle-clamp breakers clamp the wire by pressing a metal plate against the conductor rather than turning a screw into the conductor. The cheap ones that turn a screw into the conductor risk cutting into the wire and for multi-strand wire, strands can be cut off. This reduces the current carrying capacity of the wire, right at the breaker. A hot spot...another fire hazard. If you *must* use a breaker that has a screw turning directly onto the wire, then clamp a ferrule (go to Platt or other) onto it before inserting it into the breaker. A ferrule is nothing but a metal tube, usually with a plastic sleeve on one end to insulate exposed wire, that you crimp onto the wire (use the right crimping tool.) Never put the lesser of 2 conductors or what the circuit breaker (or terminal block) manufacturer recommends into the contact on the breaker. Breakers are sometimes listed as 1-conductor breakers when they are high-current types. Note that some breakers are rated for DC, and some for AC, and some for AC/DC. All can be used for DC, but the DC cannot be used for AC ...they have polarity, which means they are designed for current flow in one direction only (double check with mfg specs on AC breakers for use on DC, but I've not seen an exception to the rule I stated.) Finally, my own preference is to look for breakers that are UL listed (better than 'UL Recommended' which means they have constraints on their use that you'll probably never know) *and* CE listed. That makes them world-wide compatible and the tighter of anybody's requirements will have been built into them. Brian -- My boat project: http://www.advantagecomposites.com/tongass "Steve" wrote in message ... When I was working out the electrical supply for my Lewmar 1000 Vert. anchor windlass, I noted that the Max current @ max load (stall) was 250 amps. while the recommended circuit breaker/slowblow fuse was suppose to be only 150 amps. In my mind, this ment that the breaker would trip before I could stall the windlass. Something that is done every time I have an anchor set into mud.. I couldn't imagine that these numbers were correct. At the time I was purchasing my breakers from Waytec Inc.. When I presented my concern to them, they admited they didn't know the answer but referred me to the engineer at Bussman (or something like that) that make most all automotive fuses and breakers. (They also were the original manufactures of the breakers that Blue Seas now sells. ) Here is what he explained (as best as I can remember and understood). If I go with the Lewmar recommended breaker size of 150 amps, I can pull to the maximum working load and stall the windlass for about 30 to 40 seconds before the 150 amp breaker will trip.. This makes sense to me in my windlass application because the normal hauling load to take up the chain slack will be well below the 1000 lb capacity.. (total chain/anchor weight in the water will only be around 500 lb.). When I break the anchor out, I haul the chain up short, until the windlass stalls, then let the bouyancy of the bow and any swell, actually break the anchor out. If it's really set, I use the engine to run over the anchor and break it out that way. The amount of time I might ( an extreme case) have full load on the windlass motor would never be more than 15-20 seconds. Well within the trip spec of the 150 amp circuit breaker. Glenns situation will be similar. Since his winch is for halyards, the winch load will be low until he 'sweats' the halyard after the sail is fully hoisted. This shouldn't be more than a few seconds. I think it would be smart to have a breaker under the load rating of the winch, since the operator can't 'feel' when he has a halyard jammed/fouled. Could prevent some serious damage aloft. Too conclude my circuit breaker tail; Once I was satified with the Bussman engineer (very nice guy ) assistance an explaination, I order one breaker from Waytec to use to template my electrical panels openings and fabricate buss bars. In the final layout I ended up making openings for a total 4 of these Bussman panel mount breakers of differing amp ratings.. Eventually I placed an order for the remaining 3 breakers, now knowing what amp size I wanted. So Sorry! Bussman has discontinued all of these type of circuit breakers. ;o( Before I scrapped my exist panels and buss bars, I happened to notice that West Marine was selling the same breakers under their name but for about $40. I found Blue Seas name and phone number on the packaging and contacted them.. They told me they also sold their products through Fisheries Supply in Seattle.. Since I had a wholesale account with them I ended up getting the exact same breakers as I had built my panels for, for $24 each. -- My opinion and experience. FWIW Steve s/v Good Intentions |
#8
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Hi Amp breaker alternatives?
Glenn,
My Pro Boatbuilderr had an article about circuit breakers this month. Might be worth a look see.... Matt "Glenn Ashmore" wrote in message ... I thought I had all my high amp wiring done but there was this brand new Harken 44 electric winch on eBay that just snuck up and picked my pocket. Now I need to run more 1/0 and add another breaker. I was looking for a spot to mount a Blue sea 100A surface mount when one of my son's friends showed me a 100 amp breaker he was about to put on his humongous car sterio. This thing looks exactly like the Blue Sea except it has gold plated terminals rather than nickel. It is intended to mount under the hood next to the battery so it is fully sealed. It also sells for $11.00 as opposed to $45 for the Blue Sea. |
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