Typical electrical breakers are not instantaneous devices and likely will not trip at .5% over rated load until they've been run near limit for extended periods of time.
----- Keith Stokes > On Jul 22, 2018, at 5:52 AM, Radu-Adrian Feurdean > <na...@radu-adrian.feurdean.net> wrote: > >> On Tue, Jul 17, 2018, at 18:12, Andy Ringsmuth wrote: >> >> I suppose in reality it’s no different than any other utility. My home >> has 200 amp electrical service. Will I ever use 200 amps at one time? > > No, because at 201 Amps instantaneous the breaker will cut everything. > >> Highly highly unlikely. But if my electrical utility wanted to advertise >> “200 amp service in all homes we supply!” they sure could. Would an >> electrician be able to test it? I’m sure there is a way somehow. > > Will they deal with customers calling to complain that their (unknown to the > utility) "megatron equipment" says it cannot draw 199 Amps from a single > outlet ? I don't think so. They just ensure the global breaker will not > trigger when oven+microwave+home-wide air-con+water heating+BT rig in the > basement all draw all they can (i.e. up to ~25 Amps each) for something like > 5 min. > >> saturate my home fiber 300 mbit synchronous connection? Every now and >> then yes, but rarely. Although if I’m paying for 300 and not getting it, >> my ISP will be hearing from me. > > Will you waste your time if some random site says "you have 200 Mbps" ? On > residential, we only accept complaints for tests in pre-determined (wired, no > intermediate device, select set of test servers and tools, customer hardware > check) conditions and only for results lower than 60-70% of "advertised > speed". If wireless is invoved, test is being dismissed as "dear customer, > please fix your network, regards". > > For pro/enterprise service, we use higher bandwidth threshold, but we do > expect the other side to be competent enough for something like an iperf3 > test. > > However, I have to mention that for the moment we can afford to run a > congestion-free network (strictly less than 80% charge - usually less than > 50% - measured with 1-minute sampling). > >> If my electrical utility told me “hey, you can upgrade to 500 amp > > Are the 200 Amps written somewhere in the contract or is it what reads on the > usually installed breaker ? Around here, the maximal power is determined in > the contract (and enforced by the "connected" electrical meter/breaker that > has a generous functioning margin.
