Hello guys
Can some one pleas help me with a simple understanding of the following
1) what is continuity testing in an installation
2) insulation resistance testing
3) polarity testing
(I have a fair idea of what they are but look for a more understanding of each)
A) why are they carried out
B) what is the permissible range in testing.
And do you have to work out the diversity factor for every hob or oven even if it falls with in the 32amp reading
Ie an oven at is on a 32 but rated 2.9kw I worked it out and with out using the diversity Mehod it in 32amp use the diversity method and it's even below.
And the hob is 7200w
Lastly any good books out there with simple explanations
Thank you all I know it's a Sunday but if one has a spare time to answer thanks a lot
Can some one pleas help me with a simple understanding of the following
1) what is continuity testing in an installation
2) insulation resistance testing
3) polarity testing
(I have a fair idea of what they are but look for a more understanding of each)
A) why are they carried out
B) what is the permissible range in testing.
And do you have to work out the diversity factor for every hob or oven even if it falls with in the 32amp reading
Ie an oven at is on a 32 but rated 2.9kw I worked it out and with out using the diversity Mehod it in 32amp use the diversity method and it's even below.
And the hob is 7200w
Lastly any good books out there with simple explanations
Thank you all I know it's a Sunday but if one has a spare time to answer thanks a lot