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Registered Member #103
Joined: Thu Feb 09 2006, 08:16PM
Location: Derby, UK
Posts: 845
Assuming you mean at your house... depends on a lot of things. You'll have to investigate and make a best judgement! The supply will be fused elsewhere in the street as well, and possibly limited by a small pole mounted distribution transformer, but you have to find out yourself.
For example, I've investigated this recently at my house - the incoming cables look good for 250 amps max (pushing it a bit), and my incoming supply is from underground which goes up to a wall box and feeds 6-7 other houses (the local distribution all starts from my house). This tells me I'm ok to draw whatever current the visible cables can provide (250 amps) but in doing that I will have to apply diversity (not trying to do it when everyone else is using the power, or else I will blow the fuse up stream and cause a powercut). I could even hook a current clamp meter onto the distribution cables at my place, and see how much current the other houses were drawing! Having said all this, it's all still 'in theory', because I'm still limited by the rating of my main fuse and meter, which are property of the electricity board and cannot be touched!
So, go and investigate, see where the power is coming from!!
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Hypothetical Question
