Hmm, just made a 24way 208v
power distro with Emergency stop
system currently out on tour with some large rock tour and didn’t get anything other than complements for it. It only had one
fuse in it and it was in-line for the
LED Little Lights and that was only out of laziness in doing that instead of a
breaker. Just change a few things or re-tap a
transformer and it would even tour Europe sufficiently. This much less a 15KVA 208v Delta to 240/416V
wye transformer also using breakers in the past few weeks without anyone citing the other than well done. (Any wonder that I have been less than active in the last few weeks?)
Hmm,
circuit breakers, I would hope one is not to be using
plug fuses as they could be non-complaint with a stick finger into larger than 1/4" hole type of way. Given a
plug fuse AC
distro (not even counting such a thing in finding than screwing in such such a replacement
fuse in the dark) or finding the replacements, how would one get around that live center of the opening type question of being zapped in a Darwin type way we try to over protect against?
Hmm, for some reason the photos didn't download even if resized.
Assuming this person was all for other than screw in
plug fuses, and instead up for something for individual circuits that are smaller such as using a FRN type, why? As licenced electrician wouldn’t that invalidate the
current code concepts of tied especially dual
phase breakers? Not aware of dual fuses that will cut off
power to more than one
leg of
power should they blow. Even for single
phase circuits, gotta find the spare fuses and get them in quickly, this much less while fuses are simple blow, you can dial in your say thermal magnetic fuses for similar coverage.
What happens if given fuses and you have two
phase gear if one
phase blows but the other didn’t? Isn’t that a
bit dangerous and specifically to be prevented? Jamming of
circuit breakers I would assume he was thinking with dual
phase handle tied but not internal trip breakers which can if not properly done jam. More realistically they will jam in the off position - personal experience with that by way of flexibilty of that in not being able to turn it on but still it could jam on as a concept, or for multi-pole breakers a single pole in theory in blowing could not be sufficient to trip the rest. How does the individual
circuit breaker work better than persay not a tied
breaker but internal/external bridged
breaker for controlling two
phase circuits? Single
breaker trips in exposing an open or even floating
return path in concept which could get very dangerous in concept of what he would seek to protect against.
Most distros these days are two or more
phase and even if not are normally
circuit breakers and
UL listed plus engineered gear from very reputable companies that sit on the
NEC board. Not aware of any fused
breaker distros on the market these days. Would just love to pluck from his mind that while in general fuses are better overall for simplicity, how dependant on what type of
breaker you use, they are superior especially given what
fuse verses
breaker type is used. This much less how he thinks it’s better and what gear he recommends and who is using it. Just love to talk with confused people in plucking out info from them that is often useful to know even if often years out of date.
Nope... even this past week in making a CamLoc to 32A6h 3P+N+G
adaptor and using a 32A three pole
circuit breaker with the necessitated indicator lights and plywood backer on it, never once thought about using fuses for it. This other things made in the past couple of weeks or other than code compliance for its application.
Believe you just met the “grumpy old man of the theater”. Congrats. Learn what you can from him and take what you can from what you can for where it can be useful, otherwise just often they just need some time to talk in being heard.
Would love to hear his thoughts about the new four pole breakers - one with the 50%
neutral breaker that breaks the
circuit if it detects an un-balanced load of over 50% on the
neutral, this or the various
GFCI and other new types of breakers. Just pricing out main breakers for my 48way
E-Stop power supplies recently, amazing the trip ratios available much less the options and features available.