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任务
Size a cable for a shed
The smallest cable that carries the load over the run to a shed.
Check a long run for voltage drop
The voltage drop on the run, against the limit.
Fill a conduit
The space factor of a 4 mm² single core circuit in a 25 mm conduit.
Add an instrument loop
A cable for the signal over a 150 m route.
Earth a cable screen
Where to earth the screen and the drain wire.
Check solar voltage rise
The voltage rise on a 45 m cable from a 5 kW inverter.
Check disconnection time
The loop impedance of a 32 A circuit on a 45 m run, against the maximum Zs.
Work out commercial maximum demand
The maximum demand of a tenancy from Table C2.
全部任务
工具
电缆
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Cable size
Voltage drop
Loop impedance
Fault rating
Conduit fill
Voltage rise
Underground cable
Segregation and separation
Maximum circuit length
Simplified selector
Minimum conductor size
Imperial cable
Comms cable selector
Aerial clearances
Site cord length
Loop power budget
DC cable size
Correction factors
Total voltage drop
Conductor colours
Cable tray fill
Cable loss cost
保护
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−
IDMT protection
RCD selection
Switchboard form
Circuit check
Fault level at a board
RCD arrangement
Circuit chart
RCD leakage budget
MCB trip curve
Surge protection
负荷
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−
Maximum demand
Full load current
Motor
Battery
Circuit loading
Max demand by phase
Lighting lumen method
EV charger circuit
Power factor correction
Max demand by floor area
Spare capacity
Motor circuit
Motor starting methods
VSD motor lead
Load schedule
功率
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Three phase power
Transformer
Generator current
Ohm's law
Generator sizing
Transformer inrush
Transformer sizing
UPS sizing
Neutral current
Voltage unbalance
Harmonics
Battery duty cycle
太阳能
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PV string sizing
Home battery
PV array isolator and earthing
Battery location check
Battery arc flash and class
安全
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−
Arc flash
Construction site supply
Show and carnival wiring
Wet area zones
Obtrusive light
Downlight clearance
Accessory location
IP rating
接地
+
−
Earthing and bonding
Screen and drain earthing
Outbuilding earthing
测试
+
−
Test results
Test and tag
Test schedule
消防
+
−
Sounder level
Fire alarm cabling
Fire alarm battery
Detector spacing
法规
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−
Regulatory pathway
Assessment intervals
Hand-held supply
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向导
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自动化
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太阳能
13
指南
工程师
20
指南
估价员
19
指南
学徒
44
指南
业主
25
指南
全部指南
学习
Conduit fill and installation methods
Current-carrying capacity and derating
Downlights and insulation: IC-4, CA90 and Non‑IC
Home batteries and AS/NZS 5139
Home battery location and clearances
How many circuits can go on one RCD
MEN system: multiple earthed neutral explained
Power points near a cooktop, gas bottle and sink
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